The lot’s perimeter, where the asphalt meets the lawn, is a common problem area for damages. Unwanted weeds often sneak their way through the asphalt surface and damage it from below with their roots. Also, poor drainage can wash away the sub-base near the edges, especially if on an incline. Tackle any drainage issues with a trained contractor, and consider adding curbs to the edges of your lot.
Curbing can reduce the amount of weeding and grass growth. Not only is this solution practical, but it will boost the visual appeal of your parking lot, too.